Truck for railway-cars



(No Model.)

TRUCK FOR RAILWAY GARS.

No. 402,951. ma May 7. ,1889.

v.. Il I mm'F mum 2 Sheets-Sheet 1. J. W. MALOY.

(No Model.)

J. W. MALOY.

2 Sheet--Sheet 2.,

TRUCK POR RAILWAY GARS. l

Patented May '7, 1889.

so a as. @H E N. PETERS, PlwwvLimogmpher. wzshngwn. D. C.

UNITED STATES PATENT OFFICE.

. JAMES IV. MALOY, OF MARIETTA, GEORGIA.

TRUCK FOR RAILWAY-CARS.'

SPECIFICATION forming part of Letters Patent N0. 402,951, dated May 7, 1889.

Application filed July l2, 1888. Serial No. 279,757. (No model.)

` which the following is a specification.

This inventionV relates to railway-cars, and more particularly to the trucks of such cars; and it consists in the novel construction and arrangement of parts, whereby the axles are pivotally mounted and adapted to be swung independently of each other and in unison, and whereby the rotation of each wheel is rendered independent of the other wheels to facilitate the turning of curves.

In the accompanying drawings, Figure 1 is a plan view of a car-truck embodying they present invention. Fig. 2 is a similar view looking from the under side of the truck. Fig. 3 is a view similar to Fig. 1, the upper portion of the truck-frame being removed to expose the axle-bearings, the wheels and axles being adjusted to their normal or parallel position. Fig. 4 is a vertical cross-section taken yon the line of Fig. 3, and Fig. 5 is an en larged sectional elevation of one of the boxes supporting the outer end of an axle, taken on the line y of Fig. 4, looking upward.

The frame A is constructed, as hereinafter more particularly set forth, to support the axles of two pairs of wheels, B B, C C', each wheel having an independent axle, 2, extending through a bearing, 3, supported by one of the inner side bars, 4, of the frame, provided at its outer end with a journal, 5, iitted to a swiveling bearing, 7, in a box, 6, supported by the outer side bar, 8, of the frame, and the inner end of each axle turns in a box, 9, which slides between curved guides 10 10 upon' the adjacent side bearing, 4, of the frame, as shown in Figs. 4 and 5. Each swiveling bearing 7 turns upon a central pin, 18, extending downward from the top of the box 6, so that the journal 5 of each wheel B or B will support the frame A of the truck at the point where the box 6 is situated, while the axle 2 will swing freely through the bearing 3, which is slotted for the purpose, as shown in Fig. 4, and the box 9, which supports the inner end of the axle, will slide between the guides 10, which are curved to correspond to a circle of which the pin 18 is the center.

It will be seen that the axles overlap each other and have their respective bearings on opposite sides of the truck, whereby increased steadiness is obtained; but as neither axle 2 extends past the periphery of any one of the wheels in order to take its bearing, but has its bearing or box adjacent to the inner face of one of the wheels, the independent axles may be brought much closer together than where they have their bearings beyond the outer faces of the wheels.

Each pair of side bars, 4 8, of the truckframe are connected by a portion, 13, of a cross bar or girder, D, which extends midway between the adjacent wheels, the intermediate portion, 14, of the girder extending diagonally between the two portions 13, as best shown in Fig. l.

The axles of the wheels are supported in swiveling and sliding boxes, as before described, in order that each axle may, when the truck travels upon a curve, assume a position parallel to the radius of said curve, and in order to control the movable axles and carry them in unison to their proper radial positions I connect the movable boxes thereof by means of connecting-rods, that I will now describe. These connecting-rods 2O 30 extend diagonally and across each other between the side pieces, 4, and are independent of each other. The connecting-rod 20 is pivotally secured to the boxes 9, carrying the ends of the twol outer axles sustaining the wheels B and C', and the other connecting-rod, 30, is similarly secured to the boxes carrying the ends of the two inner axles sustaining the wheels B and C. The effect of this connection is such that if the rod 2O be moved, say, in the direction of the arrow a, Fig. 3, the axles 2, sustaining the wheels B and C,will be simultaneously moved from their normal parallel position (shown in Fig. 3) to their angular or radial position. (Shownin Figs. 1 and 2.)

The same effect will occur if the connectingrod 30 be moved in the direction of its arrow b, Fig. 3, simultaneously moving the axles sustaining the wheels B and O from their IOC normal parallel position (shown in said figure) to the angular or radial position, (shown in Figs. l and 2,) the axles sustaining the wheels B and B in this instance being moved to a position nearer each other, while those sustaining the wheels C and C are farther separated from each other. In each case, however, the adjustment of each of the axles will correspond to the radii of the curves over which the wheels are to pass. In order to eiect this movement of the connecting-rods simultaneously and to an equal extent, the said rods are connected together, so as to move in unison. As shown, there is provided a lever, 21, pivoted at 22 to a cross-bar, 23, extending between the side bars, 4, of the truck, the ends of which lever 2l are connected by links 24 25 with the connecting-rods 2O 30, respectively, from which it will be seen that it the lever 21 be rocked in the direction of its arrow, Fig. 3, both the connecting-rods 20 8O will be moved in unison to shift the position of their respective axles.

The automatic adjustment of the axles and wheels to correspond with the curves over which the truck is to travel may be effected by means of an arm, 3l,pivotally mounted at 32 to the truck-frame, and connected by a lever, 33, and link 34 with the lever 2l, the said arm 3l being connected in any suitable manner with the preceding car or truck, so that as the said car or truck varies from its right line of position the said arm 3l will be correspondingly moved to rock the lever 2l., and thereby impart, through the connecting-rods 2O 30, the desired angular movement to their respective axles.

Vithout limiting myself to the precise construction and arrangement of parts shown, I claim- 1. The combination, with a railway-car truck, of separate wheels secured to separate overlapping axles extending from side to side of the truck and mounted in independent movable bearings, said axles being adapted to be moved to and from each other, substantially as described.

2. The combination, with a railway-car truck, of supporting-wheels secured to sep arate overlapping axles, the outer ends of the axles being mounted in swiveling boxes at one side of the truck, and their inner ends mounted in sliding boxes at the opposite side thereof, substantially as described.

3. The combination, with a railwaycar truck, of a pair of supporting-wheels secured to separate parallel overlapping axles, the outer ends of the axles being mounted in swiveling boxes and their inner ends in horizontal sliding boxes, and a connecting-rod connecting thelatter boxes together, whereby the axles are swung in unison, substantially as described.

4. The combination, with a railwaycar truck, of two pairs of supporting-wheels, each wheel carried by a separate axle', the outer ends of the axles being mounted in swiveling boxes and their inner ends mounted in sliding boxes, and connecting-rods 2O 30,'connecting the boxes at the outer ends of each pair of axles together, whereby the axles of each pair are swung in unison, substantially as described.

5. The combination, with a railwaycar truck, of two pairs oi' supporti11g-wheels, each wheel carried by a separate axle, the outer ends of the axles being mounted in swiveling boxes and their inner ends free to swing horizontally, connecting rods connecting the outer ends of the axle of each pair together, and a lever and links connecting the said rods together, whereby they are moved in unison, substantially as described.

(i. The combination, with a railway -car truck, of supporting-wheels secured to separate axles, the outer ends of the axles being mounted in swiveling boxes and their inner ends mounted in sliding boxes, connectingrods connecting the inner ends of two axles together, a lever and links connecting the connecting-rods together to move in unison, an arm, 3l, and connections between the latter and said lever for simultaneously adjusting the posit-ion of the axles, substantially as described.

7. The combination, with a railway car truck having outer side bars, 8, and inner side bars, 4C, of supporting-wheels secured to separate axles, the outer ends of the axles supported in swivelin g boxes carried bythe outer side bars, the inner portion of the axles extending through bearings in one of the inner side bars, and the extreme inner end of the axles mounted in sliding boxes in the other side bar, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES lV. MALOY.

Witnesses:

GEO. F. NEwELL, A. Y. LEAKE.

IOO 

